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Merge pull request #1778 from infosiftr/postgres-alpine 

Add note about Alpine locales
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yosifkit 2020-08-12 10:20:38 -07:00 committed by GitHub
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@ -169,7 +169,7 @@ There are many ways to set PostgreSQL server configuration. For information on w
## Locale Customization ## Locale Customization
You can extend the image with a simple `Dockerfile` to set a different locale. The following example will set the default locale to `de_DE.utf8`: You can extend the Debian-based images with a simple `Dockerfile` to set a different locale. The following example will set the default locale to `de_DE.utf8`:
```dockerfile ```dockerfile
FROM %%IMAGE%%:9.4 FROM %%IMAGE%%:9.4
@ -179,6 +179,8 @@ ENV LANG de_DE.utf8
Since database initialization only happens on container startup, this allows us to set the language before it is created. Since database initialization only happens on container startup, this allows us to set the language before it is created.
Also of note, Alpine-based variants do *not* support locales; see ["Character sets and locale" in the musl documentation](https://wiki.musl-libc.org/functional-differences-from-glibc.html#Character-sets-and-locale) for more details.
## Additional Extensions ## Additional Extensions
When using the default (Debian-based) variants, installing additional extensions (such as PostGIS) should be as simple as installing the relevant packages (see [github.com/postgis/docker-postgis](https://github.com/postgis/docker-postgis/blob/4eb614133d6aa87bfc5c952d24b7eb1f499e5c7c/12-3.0/Dockerfile) for a concrete example). When using the default (Debian-based) variants, installing additional extensions (such as PostGIS) should be as simple as installing the relevant packages (see [github.com/postgis/docker-postgis](https://github.com/postgis/docker-postgis/blob/4eb614133d6aa87bfc5c952d24b7eb1f499e5c7c/12-3.0/Dockerfile) for a concrete example).